Andrews, Frank M.
University of Michigan, 1981
Buku Teks
Hoel, Paul Gerhard, 1905-
John Wiley & Sons, 1962
Buku Teks
Hansen, Kermit O.
Prentice-Hall, 1955
Buku Teks
Fox, William
MicroCase Coorporation, 1995
Buku Teks
Stopher, Peter R.
Lexington Books, 1979
Buku Teks